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A kind of vertical graphene-polymer composite material and preparation method thereof

A high molecular polymer and composite material technology, applied in the field of vertical graphene-high molecular polymer composite materials and its preparation, can solve the problems of destroying vertical morphology and microstructure, destroying structure, and easily contaminating active substances, etc., to achieve The effect of protecting the unique structure and huge surface area, wide application scenarios, and simple preparation process

Active Publication Date: 2020-10-30
SHENZHEN YICK XIN TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, as a nanomaterial, upright graphene is macroscopically fragile, afraid of scratches, rubbing, and direct contact with foreign objects, and even strong air currents and water flows may destroy its upright morphology and microstructure, and its large surface area is also easy to Contaminated with various pollutants such as fine dust, the active substance loses its effectiveness
In addition, as a nanomaterial, upright graphene grows in situ on the surface of high-temperature-resistant substrates. These substrate materials are often thick and strong. If you want to maintain the unique structure of upright graphene, you must rely on the substrate. destroy its structure
Relying on the substrate greatly limits the application of vertical graphene, and limits its application potential in many ways

Method used

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  • A kind of vertical graphene-polymer composite material and preparation method thereof
  • A kind of vertical graphene-polymer composite material and preparation method thereof
  • A kind of vertical graphene-polymer composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A vertical graphene-Nafion composite material, including a highly conductive carbon paper substrate, vertical graphene and polymer Nafion. The vertical graphene grows on the surface of the highly conductive carbon paper substrate, and the polymer Nafion is evenly loaded on the surface and edge of the vertical graphene.

[0045] Vertical graphene includes two parts: a planar graphene layer close to the substrate and a vertical graphene layer embedded in a polymer.

[0046] A kind of preparation method of vertical graphene-Nafion composite material, comprises the steps at least:

[0047] In the first step, put the high-conductivity carbon paper into the vacuum chamber of the plasma chemical vapor deposition device, feed the reducing gas hydrogen and argon at 1:1, and maintain the low pressure state in the device through flow adjustment, so that the vacuum degree is stable at 15Pa, conduct plasma etching reaction on highly conductive carbon paper, the reaction time is 10m...

Embodiment 2

[0055] Different from Example 1 is the preparation method of vertical graphene / high molecular polymer composite material, the method at least comprises the following steps:

[0056] In the first step, the polished silicon wafer is placed in the vacuum chamber of the plasma chemical vapor deposition device, and the reducing gas hydrogen and argon are introduced at a ratio of 1:1, and the low pressure state in the device is maintained by flow adjustment, so that the vacuum degree is stable at 15Pa , carry out plasma etching reaction on the substrate, the reaction time is 10min, and the power density of the plasma equipment is 10 watts per square centimeter;

[0057] In the second step, argon gas is introduced after the etching reaction is completed, and heated to 700 °C at a heating rate of 20 °C / min. After heating, hydrogen and methane are injected at a ratio of 1:1, and the low pressure state in the device is maintained through flow adjustment to maintain vacuum The degree is ...

Embodiment 3

[0065] Different from Example 1 is the preparation method of vertical graphene / high molecular polymer composite material, the method at least comprises the following steps:

[0066] In the first step, put the high-conductivity carbon paper into the vacuum chamber of the plasma chemical vapor deposition device, feed the reducing gas hydrogen and argon at 1:1, and maintain the low pressure state in the device through flow adjustment, so that the vacuum degree is stable at 15Pa, conduct plasma etching reaction on highly conductive carbon paper, the reaction time is 10min, and the power density of plasma equipment is 10 watts per square centimeter;

[0067] In the second step, argon gas is introduced after the etching reaction is completed, and heated to 700 °C at a heating rate of 20 °C / min. After heating, hydrogen and methane are injected at a ratio of 1:1, and the low pressure state in the device is maintained through flow adjustment to maintain vacuum The degree is 15Pa;

[0...

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Abstract

The present invention relates to the technical field of graphene composite materials, and in particular, to a vertical graphene-high molecular polymer composite material, comprising a substrate, vertical graphene, and a high molecular polymer. The vertical graphene grows on the surface of the substrate. The high molecular polymer is cured into a film and uniformly loaded on the surface and edge of the vertical graphene. Compared with the prior art, according to the vertical graphene-high molecular polymer composite material provided by the present invention, the unique morphology and super large surface area of the vertical graphene are maintained while the vertical graphene is separated from the substrate, and the flat graphene layer at the bottom is used. Moreover, the high molecular polymer can protect and cure the vertical graphene and the active substance loaded on the surface to increase the service life of the material. In addition, by adjusting the pore structure of a high molecular polymer thin film, substance exchange between the vertical graphene and the outside world is facilitated, and reaction efficiency is improved. Also disclosed is a preparation method for a vertical graphene-high molecular polymer composite material.

Description

technical field [0001] The invention belongs to the technical field of graphene composite materials, in particular to a vertical graphene-polymer composite material and a preparation method thereof. Background technique [0002] Since vertical graphene was successfully prepared in 2003, this star material has attracted people's attention because of its special structure, easy industrial production and excellent performance. This material, which grows directly on the surface of the substrate without a binder, has a huge specific surface area and micro-mechanical strength. Studies have shown that vertical graphene has broad application prospects, such as catalyst loading, biosensors, energy storage, electrochemical electrodes, flexible electrodes, transparent electrodes, heating, heat conduction and other fields. [0003] However, as a nanomaterial, upright graphene is macroscopically fragile, afraid of scratches, rubbing, and direct contact with foreign objects, and even str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/22C08K3/04C08L27/16C08L71/02C08L83/04C08L79/02C08L65/00C08L25/18C08L27/18C08L29/04C08L33/12C08J5/18
CPCC08J5/18C08J2327/16C08J2327/18C08J2327/22C08J2333/12C08J2365/00C08J2379/02C08J2383/04C08J2425/18C08J2429/04C08J2471/02C08K3/042
Inventor 郑伟赵鑫
Owner SHENZHEN YICK XIN TECH DEV CO LTD
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